Help LG G3 MMS problems.

I have a question regarding my new phone. I just bought an AT&T unlocked LG G3 D850 which I plan to activate with AT&T. But before I take it in for activation I did some research and I read alot of articles about the LG G3 having problems receiving and sending multimedia massages. I would like to know if this is a real problem with the LG G3. Because if it is then I will need to return it and get a different phone. Does anybody know about this. Any help would be appreciated. Thanks.